external hard disk

Posted by: Samuel M.24 Apr 2014 @ 09:53

external hard disk

I have a seagate 1 terabyte hard disk purchased from amazon quite a while ago. When I right click on drive it indicates I only have 70GB of available space left but when I go into disk management it indicates 250 MB used. Have I been sold a fraud drive or is there free sectors left I need to recover or are there hidden files somewhere.